Gotta admit I always thought the back and forth scrub was the way to go too, like you're really getting in there. Watching that hygienist show the tiny circles on the model made me feel kinda dumb, but now I'm paranoid every time I brush. Swear I spent a whole week just staring at my own gums in the mirror after that.

Man that sucks, spent way too many hours on gremlins like that myself. Two months of chasing a ghost is brutal, especially when it's an intermittent thing that only shows up when you're not looking at it. I feel for anyone who has to deal with that kind of head scratching while the plane is just sitting there laughing at you. Hope it stays dead for good this time.

Read a consumer report saying meal apps push pricier items on purpose, so your local store approach makes sense.

Mine worked great after I actually read the manual, took ten minutes.

It's like when you force yourself to cook a fancy meal from scratch and suddenly your everyday pasta tastes better for a week. Slowing down once reminds your hands what they're supposed to be doing.